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Cheap flights from Washington to Jeju-do from $1,241

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Jeju-do departing on 5/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington to Jeju-do

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:15 am - 6:10 am
SEA
-
CJU
36h 55m
1 stop
Multiple Airlines Logo
9:35 pm - 2:25 pm
CJU
-
SEA
32h 50m
2 stops
$1,241Multiple Airlines
Thu, May 7 - Fri, May 15
Multiple Airlines Logo
12:55 am - 2:00 pm
SEA
-
CJU
21h 05m
2 stops
Multiple Airlines Logo
10:20 am - 7:50 pm
CJU
-
SEA
25h 30m
1 stop
$1,307Multiple Airlines
Thu, Jul 30 - Mon, Aug 24
Singapore Airlines Logo
10:15 am - 7:25 am
SEA
-
CJU
53h 10m
1 stop
Singapore Airlines Logo
9:30 am - 8:45 am
CJU
-
SEA
39h 15m
1 stop
$1,332Singapore Airlines
Tue, Aug 18 - Wed, Aug 26
Singapore Airlines Logo
10:15 am - 7:25 am
SEA
-
CJU
53h 10m
1 stop
Singapore Airlines Logo
9:30 am - 8:45 am
CJU
-
SEA
39h 15m
1 stop
$1,374Singapore Airlines
Tue, Aug 18 - Wed, Aug 26
Multiple Airlines Logo
1:15 am - 9:35 am
SEA
-
CJU
16h 20m
1 stop
Multiple Airlines Logo
10:30 am - 4:10 pm
CJU
-
SEA
21h 40m
1 stop
$1,430Multiple Airlines
Thu, May 7 - Fri, May 15
Multiple Airlines Logo
1:15 am - 9:35 am
SEA
-
CJU
16h 20m
1 stop
Multiple Airlines Logo
10:20 am - 4:35 pm
CJU
-
SEA
22h 15m
1 stop
$1,442Multiple Airlines
Sun, Aug 2 - Mon, Aug 24
Multiple Airlines Logo
12:55 am - 2:00 pm
SEA
-
CJU
21h 05m
2 stops
Multiple Airlines Logo
9:30 pm - 2:20 pm
CJU
-
SEA
32h 50m
2 stops
$1,450Multiple Airlines
Thu, May 7 - Fri, May 15
Multiple Airlines Logo
12:55 am - 8:35 pm
SEA
-
CJU
27h 40m
3 stops
Multiple Airlines Logo
9:30 pm - 2:20 pm
CJU
-
SEA
32h 50m
2 stops
$1,487Multiple Airlines
Thu, May 7 - Fri, May 15
Singapore Airlines Logo
10:15 am - 7:25 am
SEA
-
CJU
29h 10m
1 stop
Singapore Airlines Logo
9:30 am - 8:45 am
CJU
-
SEA
39h 15m
1 stop
$1,522Singapore Airlines
Sun, Aug 2 - Fri, Aug 21
Multiple Airlines Logo
1:15 am - 9:45 am
SEA
-
CJU
16h 30m
1 stop
Multiple Airlines Logo
10:20 am - 4:35 pm
CJU
-
SEA
22h 15m
1 stop
$1,552Multiple Airlines
Fri, Jul 31 - Mon, Aug 24

Singapore Airlines flights from State of Washington to Jeju-do

Our best Singapore Airlines deals on State of Washington to Jeju-do flight tickets
Singapore Airlines
Aug 18
SEA10:15 amSeattle/Tacoma Intl
53h 10m
1 stop
CJU7:25 amJeju City
Aug 26
CJU9:30 amJeju City
39h 15m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$1,332
Singapore Airlines
Aug 18
SEA10:15 amSeattle/Tacoma Intl
53h 10m
1 stop
CJU7:25 amJeju City
Aug 26
CJU9:30 amJeju City
39h 15m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$1,374
Singapore Airlines
Aug 2
SEA10:15 amSeattle/Tacoma Intl
29h 10m
1 stop
CJU7:25 amJeju City
Aug 21
CJU9:30 amJeju City
39h 15m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$1,522

Cathay Pacific flights from State of Washington to Jeju-do

Our best Cathay Pacific deals on State of Washington to Jeju-do flight tickets
Cathay Pacific
Aug 18
SEA12:25 pmSeattle/Tacoma Intl
26h 05m
1 stop
CJU6:30 amJeju City
Aug 26
CJU7:30 amJeju City
18h 50m
1 stop
SEA10:20 amSeattle/Tacoma Intl
$1,902
Cathay Pacific
Aug 1
SEA12:25 pmSeattle/Tacoma Intl
26h 05m
1 stop
CJU6:30 amJeju City
Aug 22
CJU7:30 amJeju City
18h 50m
1 stop
SEA10:20 amSeattle/Tacoma Intl
$2,312

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Jeju-do that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 26, 2026.
Use the filters below to find and compare flights from Washington to Jeju-do that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Thu 5/7

1:15 am-6:10 am

1 stop36h 55m

Jeju City

Fri 5/15

9:35 pm-2:25 pm

2 stops32h 50m

$1,241

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Thu 7/30

12:55 am-2:00 pm

2 stops21h 05m

Jeju City

Mon 8/24

10:20 am-7:50 pm

1 stop25h 30m

$1,307

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Tue 8/18

10:15 am-7:25 am

1 stop53h 10m

Jeju City

Wed 8/26

9:30 am-8:45 am

1 stop39h 15m

$1,332

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Tue 8/18

10:15 am-7:25 am

1 stop53h 10m

Jeju City

Wed 8/26

9:30 am-8:45 am

1 stop39h 15m

$1,374
Quickest round-trip

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Thu 5/7

1:15 am-9:35 am

1 stop16h 20m

Jeju City

Fri 5/15

10:30 am-4:10 pm

1 stop21h 40m

$1,430

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Sun 8/2

1:15 am-9:35 am

1 stop16h 20m

Jeju City

Mon 8/24

10:20 am-4:35 pm

1 stop22h 15m

$1,442

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Thu 5/7

12:55 am-2:00 pm

2 stops21h 05m

Jeju City

Fri 5/15

9:30 pm-2:20 pm

2 stops32h 50m

$1,450

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Thu 5/7

12:55 am-8:35 pm

3 stops27h 40m

Jeju City

Fri 5/15

9:30 pm-2:20 pm

2 stops32h 50m

$1,487

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Sun 8/2

10:15 am-7:25 am

1 stop29h 10m

Jeju City

Fri 8/21

9:30 am-8:45 am

1 stop39h 15m

$1,522

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Fri 7/31

1:15 am-9:45 am

1 stop16h 30m

Jeju City

Mon 8/24

10:20 am-4:35 pm

1 stop22h 15m

$1,552

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap State of Washington to Jeju-do flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Jeju-do

Fastest flight time

26h 05m

Direct flights

None
The fastest flight from State of Washington to Jeju-do takes 26h 05m
There are no direct flights from State of Washington to Jeju-do. There are no popular flight routes from State of Washington to Jeju-do.
Search flight deals

  • When did momondo last update prices for flights from Washington to Jeju-do?

    Prices for flights from Washington to Jeju-do are updated daily.

  • How old do you have to be to fly from Washington to Jeju-do?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Jeju-do.

  • What documentation or ID do you need to fly to Jeju-do?

    The travel and health documents you'll need for your trip to Jeju-do may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Jeju-do. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from State of Washington to Jeju-do?

    Price Alerts will notify you by email when the price for flights to Jeju-do from State of Washington decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from State of Washington to Jeju-do with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Jeju-do?

It is quick and easy to find Washington to Jeju-do flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Jeju-do that suits you.

Can I find flights from Washington to Jeju-do with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington to Jeju-do flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington to Jeju-do?

Once all potential Washington to Jeju-do flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Washington to Jeju-do right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Jeju-do, momondo offers a useful price alert feature which will track prices for flights to Jeju-do from Washington and alert you when they change.

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